如何获取云到设备的待处理消息计数

Question

我正在使用Azure IoT中心。在Azure门户中，很容易看到队列中有多少云到设备消息挂起。

我想使用C＃SDK读取此值

Answer 1

我终于找到了可行的答案，如下所示：

using Microsoft.Azure.Devices;

RegistryManager registryManager = RegistryManager.CreateFromConnectionString("registryreadconnectionstring");

Device device = await registryManager.GetDeviceAsync("device-id");

var count  = device.CloudToDeviceMessageCount;

Answer 2

var device = new Microsoft.Azure.Devices.Device("device-id");
var cloudToDeviceMessageCount = device.CloudToDeviceMessageCount;